IS0GRB Winlink Server on QO-100 (Dial 10489635.0 USB)

DO4BMW · Apr 6th 2021

dont know what the firewall has todo with the HF-Route and a PC without internet connection

but it is working now again , without any change ... must be a problem this morning , but it is working now again 100% fine

many thanks

DJ7WL · Apr 8th 2021

This day i have done the first test. The equipment i´m using Amsat DL downconverter, Kuhne upconverter,

IC 7900 in Sat mode and pc connectet to the IC 7900 by a USB cable. The up and downlink as well the IC 7900

are gps stabilized. So i get the correct frequencies quit easy. Test with the calibration function found only

about 12 hz deviation. After that i transfer some text and a small picture from shore to my sat station and

it works quit well. The picture was received well but the text has been mixed with HTML signs.

This of course has nothing to do with the satlink wich was working very well. Maby somebody can tell me

how to overcome this problem in the Winlink Express adjustment. Sending text from the satstation to shore

was not working now. Maby it has somethings to do with the HTML signs adjustment. To morrow i will give

it a try.

73 Joachim

CT1EAT · Apr 9th 2021

Hi

For some unknow reason to me, I only paid attention to this post last nigh. I downloaded the software but it was too late to figure out "what does what". Today morning I was fresh to give it a try. And, in less than an hour, I had sent my very first email via QO-100!!!

This is bloody brilliant!!! My congratulations to all who devised this system, specially to Roberto who made it available via the satellite.

Since the 90s, when I sent my first msg via Pacsats (using Wisp), I didn't felt this thrill.

73 FCosta, M0HOJ (also CT1EAT)

SM0YOS · Apr 10th 2021

Hi,

The new Vara version work fine with very low Tx power from Stockholm.

Great job Jose and Roberto

73s

Thomas SM0YOS

IS0GRB · Apr 11th 2021

Good morning i reported to Josè a malfunction of the version 4.1 of the vara modem.

It seems that sometimes it has problems in decoding, often the correspondent transmits but the server does not decode, the speed decays frighteningly and when the server decodes the SNR value is often extremely low as you can see from the attached screen, which never is happened with version 4.0.2 where the speeds were high.

I asked if you can check this and possibly release, as soon as possible, a version that works in decoding like the previous one as many fellow radio amateurs are having big problems.

Roberto IS0GRB

IS0GRB · Apr 18th 2021

After about 1 week of observation and the new 4.2 version of the Vara Sat modem it seems that everything is working correctly.

If you notice anomalies of connection and/or speed problems it is advisable to report the information to myself and the author Jose EA5HVK via email.

Thanks for collaboration

73

Roberto IS0GRB

DJ7WL · Apr 19th 2021

After a little work from my side the system is working perfect now. I installed Winlink Express 1.5.36.0

as well as Vara Modem 4.2.0. Thanks to Roberto IS0GRB and Jose EA5HVG for this good work.

Make several tests in both direction all is working fine.

73 Joachim

DJ7WL · May 1st 2021

At the post #122 i explained my problem with the text send with my mail browser.

The solution for this problem is to send it as text mode not as HTML as i have done befor.

DF2PI · Jul 19th 2021

Hello,
I have tried to setup VARA SAT modem and Winlink Express according to the different hints in this thread. Seems to be ok, but does not connect to IS0GRB anyhow.
Is there any complete setup-description out there to be used with VARA SAT modem, WinlinkExpress and IC-9700? Would help me to check it again. Thanks a lot!

regrads,
Bert, DF2PI

IS0GRB · Jul 19th 2021

Hi Bert, my server is running, no problem

Be sure to use vara sat modem v.4.2.0 and that freq. is 10489635.
Normally you should use if possibile a gpsdo or try moving the vfo if not have a tcxo in the radio

You can monitor your signal using my websdr at http://websdr.is0grb.it:8901

Sending vara manually in ptt in Settings > Soundcard> Tune you should see your signal in 10489636.5 (+1500Hz)

If not try to adjust the vfo

73

Roberto IS0GRB

IS0GRB · Jul 19th 2021

Hi Bert, the problem is solved.
There was a defect in the UHF radio connected to the SG-labs transverter, now it's fine.

73

Roberto IS0GRB

DF2PI · Jul 20th 2021

Hello Roberto,
thanks a lot for checking the server. I have tested it this morning, all doing fine! So my setup here ist ok,

all 100% Thanks a lot for your help!
vy 73,

Bert, DF2PI

EA3IGB · Oct 5th 2022

I am to try today

ZR6TG · Oct 29th 2022

Still figuring out winlink, but connection to your server seems to be working fine Thank you!

T

SM0YOS · Jan 29th 2023

Hello Roberto,

Do you have any plans to support Ardop on your Winlink Gateway?

73

Thomas SM0YOS

IS0GRB · Feb 1st 2023

Hi Thomas at the moment i have only one rtx set up for the varasat modem.
In all cases the vara is more performing for connections
73
Roberto IS0GRB

SM0YOS · Feb 2nd 2023

Hi Roberto

Thanks for your answer. Yes Vara has excellent performance, but I have problem to run Varasat on a Raspberry pi under Wine.

Waiting for a Vara Linux version

73

Thomas SM0YOS

IS0GRB · Feb 15th 2023

Hi Thomas i enabled Ardop together with Varasat on winlink server.

4FSK, 4PSK, 8PSK and 16QAM modes are active.

If you can do some tests let me know if everything works

73

Roberto IS0GRB

IS0GRB · Feb 15th 2023

Keep in mind that you may have connection problems because Ardop does not consider the satellite delay and without modifications as they have been done in Varasat it expects a response for a period of time, otherwise it sends the request again creating a collision.

73

IS0GRB · Feb 15th 2023

In ardop virtual tnc set the tuning range to max (200) probably the frequency is not exactly and reduce the buffer in sdrconsole so you can see the audio delay at the bottom.
Also reduce the virtual audio delay, in the program folder you will have a tool that allows you to reduce the buffer (delay). Probably with vara you will have a higher speed.

IS0GRB Winlink Server on QO-100 (Dial 10489635.0 USB)

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